Too much sitting linked to an early death

I spend most of each workday sitting in a chair, my fingers the only part of my body moving with any intensity. Technology lets me—as well as millions of other people—earn a living from the relative comfort of our desks, without having to break a sweat or even stand up. Once the workday is done, we can transition straight from desk to car to couch, taking barely a step in between.

The ease of our modern workday could come at the expense of our longevity. A new study of older women in the American Journal of Preventive Medicine finds that sitting for long stretches of time increases the odds of an untimely death. The more hours women in the study spent sitting at work, driving, lying on the couch watching TV, or engaged in other leisurely pursuits, the greater their odds of dying early from all causes, including heart disease and cancer.

And here’s the kicker: Even women who exercised regularly risked shortening their lifespan if most of their daily hours were sedentary ones.

“Even if you are doing the recommended amount of moderate to vigorous exercise, you will still have a higher risk of mortality if you’re spending too many hours sitting,” says Dr. JoAnn Manson, one of the study’s authors, and chief of preventive medicine at Harvard-affiliated Brigham and Women’s Hospital. “Each of these behaviors is important and has an independent effect on cardiovascular disease and mortality.”

How exactly sitting contributes to reduced longevity isn’t clear, but there are a few possible mechanisms. “Sedentary behavior is associated with an increased risk of the development of chronic conditions such as type 2 diabetes and cardiovascular disease,” says Dr. I-Min Lee, professor of medicine at Harvard Medical School.

When you sit, you expend fewer calories than you would while standing, and you demand little effort from your muscles. Sitting too much can also lead to other behaviors that contribute to obesity and heart disease. “Many times when people are sitting, what are they doing? They’re often watching TV and snacking,” says Dr. Manson.

Work out

One way to avoid prolonged sitting during the workday is to switch to a standing desk, or one that can adjust to sitting and standing positions. Some companies are piloting the use of treadmill desks, which let workers walk at a leisurely pace while they type or answer the phone. However, these machines are pricey, and if you set the speed too high your legs will wear out before 5 o’clock rolls around.

An easier, no-cost solution is to set your smartphone timer to go off every 30 to 60 minutes during the day. When the alarm rings, “Stretch and move around the office to avoid any prolonged sitting at one time,” Dr. Manson recommends.

Sit less

How much sitting can you safely do in a day? In the study, women who were inactive for 11 or more hours a day fared the worst, facing a 12% increase in premature death, but even lesser amounts of inactive time can cause problems. “Once you’re sitting for more than 6 to 8 hours a day, that’s not likely to be good for you,” Dr. Manson says. You want to avoid prolonged sitting and increase the amount of moderate or vigorous exercise you do each day, she adds.

When it comes to exercise, “Any activity is good,” says Dr. Lee. “Some is better than none, and more is better than less.” Ideally, work in a full half-hour or hour of exercise each day, while trying to be active—even in short spurts—the rest of the time. But if you can only squeeze in 10 minutes of dedicated exercise at a time, aim for that.

Romans 12:2 ESV Do
not be conformed to this world, but be transformed by the renewal of your mind,
that by testing you may discern what is the will of God, what is good and
acceptable and perfect.

Philippians 4:8 ESV
Finally, brothers, whatever is true, whatever is honorable, whatever is
just, whatever is pure, whatever is lovely, whatever is commendable, if there
is any excellence, if there is anything worthy of praise, think about these
things.

Isaiah 26:3 ESV You
keep him in perfect peace whose mind is stayed on you, because he trusts in
you.

2 Corinthians 10:3-6 ESV
For though we walk in the flesh, we are not waging war according to the
flesh. For the weapons of our warfare are not of the flesh but have divine power
to destroy strongholds. We destroy arguments and every lofty opinion raised
against the knowledge of God, and take every thought captive to obey Christ,
being ready to punish every disobedience, when your obedience is complete.

Philippians 4:4-9 ESV
Rejoice in the Lord always; again I will say, Rejoice. Let your
reasonableness be known to everyone. The Lord is at hand; do not be anxious
about anything, but in everything by prayer and supplication with thanksgiving
let your requests be made known to God. And the peace of God, which surpasses
all understanding, will guard your hearts and your minds in Christ Jesus.
Finally, brothers, whatever is true, whatever is honorable, whatever is just,
whatever is pure, whatever is lovely, whatever is commendable, if there is any
excellence, if there is anything worthy of praise, think about these things.
…

2 Timothy 1:7 ESV For God gave us a spirit not of fear but
of power and love and self-control.

Proverbs 4:23 ESV Keep your heart with all vigilance, for
from it flow the springs of life.

Romans 12:1-2 ESV I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect.